Answer :
Based on the given symptoms, the most likely diagnosis is hyperthyroidism. Hyperthyroidism is a condition in which the thyroid gland produces too much thyroid hormone, leading to an overactive metabolism.
This can result in weight loss, fine tremors, and a fast heart rate (tachycardia) as seen in the case of the 42-year-old female. The weight loss of 7 kg within a period of 2 months is significant and can be attributed to the increased metabolism caused by hyperthyroidism. The fine tremor is a classic symptom of hyperthyroidism and is often seen in the hands. The increased heart rate is also a common feature of hyperthyroidism, which is caused by the stimulation of the sympathetic nervous system. Therefore, considering all the symptoms, hyperthyroidism is the most likely diagnosis. It is important to confirm this diagnosis with appropriate laboratory testing and to provide appropriate treatment to manage the symptoms and prevent complications.
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